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<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <script>
        //call方法
        function fn(x,y) {
            console.log('我想喝手磨咖啡');
            //查看函数内部this的指向
            console.log(this);
            console.log(x+y);
        }
        // this.fn()//this是调用者，这个是window，可以省略this
        // fn()
        // fn.call()
        var o = {
            name: 'andy'
        };
        fn.call(o,1,2)
    </script>
</body>

</html>